Question: Who was Peter Paul Rubens' employer in September 1609?
Paraphrase: Give me the name of Peter Paul Rubens' employer in September 1609.
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q5599 p:P108 ?s . ?s ps:P108 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1609')) }